Total expenses of the company increased by 11.76 percent at Rs 9,816.3 crore during the reported quarter from Rs 8,782.9 crore in the corresponding period of previous fiscal, the company said in a BSE filing.

The company had to cough up Rs 458.6 crore as tax during the quarter, which is 66 percent higher than Rs 276.1 crore it paid in January-March, 2012, according to the filing.

Total income from operations of Bharti Airtel on standalone basis, however, increased by 7.35 percent to Rs 11,548.3 crore in the last quarter of 2012-13 compared to Rs 10,757.2 crore in the same period a year ago.

For the full fiscal ended March 31, 2013, the company's standalone net profit fell by 11.05 percent to Rs 5,096.3 crore from Rs 5,730 crore in 2011-12.

Income from operations (revenues) on standalone basis during 2012-13 increased by 9 percent to Rs 45,350.9 crore from Rs 41,603.8 crore in 2011-12.